Intermittent Fasting Calculator

Intermittent Fasting Calculator

Calculate your optimal intermittent fasting schedule, eating windows, and personalized fasting plans for weight loss and health goals.

Please enter valid fasting hours (8-24)
Please enter valid eating window (0-16)
Please enter valid weight
Please enter valid height
Please enter valid age (16-100)
Consult with a healthcare provider before starting any intermittent fasting program, especially if you have medical conditions.

Your Personalized Fasting Schedule

12 AM 6 AM 12 PM 6 PM 12 AM Fasting Schedule Fasting Period Eating Window
16:8 Method

Schedule Details:

Fasting Method: 16:8
Fasting Period: 8:00 PM - 12:00 PM
Eating Window: 12:00 PM - 8:00 PM
Daily Calories (TDEE): 2,200
BMI: 23.5 (Normal)
Recommended Water: 2.5L per day

Daily Schedule Breakdown:

Fasting Period 8:00 PM - 12:00 PM (16 hours)
First Meal 12:00 PM - 1:00 PM
Eating Window 12:00 PM - 8:00 PM (8 hours)
Last Meal 7:00 PM - 8:00 PM

Weight Loss Projection:

Expected Weekly Loss: 0.5 kg
Monthly Progress: 2.0 kg
Target Achievement: 6 months
Calories Saved Daily: 300-500
Important: This calculator provides general guidance. Consult a healthcare professional before starting intermittent fasting, especially if you have diabetes, eating disorders, or are pregnant/breastfeeding.

About

Our Intermittent Fasting Calculator helps you create personalized fasting schedules based on your lifestyle, goals, and preferences for sustainable weight management and health benefits.

Why Choose

Scientifically-based calculations considering your BMR, TDEE, activity level, and personal goals to create realistic and achievable fasting schedules for optimal results.

Features

Multiple fasting methods, personalized schedules, BMI calculation, TDEE estimation, weight loss projections, and customizable eating windows for flexible planning.

Benefits

Structured approach to intermittent fasting, improved metabolic health, sustainable weight management, enhanced mental clarity, and simplified meal planning.

1

Choose Your Method

Select from popular intermittent fasting methods like 16:8, 18:6, or create a custom schedule that fits your lifestyle and preferences.

2

Enter Your Details

Provide your personal information including weight, height, age, activity level, and goals for accurate calorie and schedule calculations.

3

Follow Your Schedule

Get your personalized fasting schedule with eating windows, meal timing, calorie targets, and weight loss projections for success.

Frequently Asked Questions - Intermittent Fasting Calculator

What is the best intermittent fasting method for beginners?

The 16:8 method is ideal for beginners as it's the most sustainable. You fast for 16 hours (including sleep) and eat within an 8-hour window. Start with 12:12, then gradually extend to 14:10, and finally 16:8. This allows your body to adapt slowly without extreme changes.

Can I drink beverages during my fasting window?

Yes, you can drink water, black coffee, plain tea, and other zero-calorie beverages during fasting. Avoid adding sugar, milk, cream, or artificial sweeteners as they can break your fast. Stay hydrated with 2-3 liters of water daily for optimal results.

How much weight can I lose with intermittent fasting?

Weight loss varies by individual, but typical results are 0.5-1 kg per week. Factors include starting weight, adherence to schedule, food choices, and activity level. Our calculator estimates 2-4 kg monthly loss when combined with healthy eating and regular exercise.

Are there any side effects of intermittent fasting?

Common initial side effects include hunger, fatigue, and irritability, which typically subside within 1-2 weeks. Some may experience headaches or difficulty concentrating. These effects diminish as your body adapts. Consult a doctor if you have medical conditions or persistent symptoms.

Who should avoid intermittent fasting?

Avoid IF if you're pregnant, breastfeeding, under 18, have eating disorders, diabetes (without medical supervision), or certain medical conditions. Also not recommended for those with a history of hypoglycemia or taking medications requiring food intake. Always consult healthcare providers first.